There could be different reasons why you would like to do that but in any case the path is the same:
1.Find the items in your Archive.
2.Tick their boxes.
4.If you're going to publish this item again, please select "Clear publishing data" to remove the tag that labels published items.
5.If you're not planning to republish - then leave the box clear.
6.Confirm and go to the Inbox to see the item there.